[Idr] Shepherd Review for draft-chen-idr-bgp-sr-policy-cp-validity-03
Susan Hares <shares@ndzh.com> Fri, 21 March 2025 05:58 UTC
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From: Susan Hares <shares@ndzh.com>
To: "idr@ietf.org" <idr@ietf.org>
Thread-Topic: Shepherd Review for draft-chen-idr-bgp-sr-policy-cp-validity-03
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Subject: [Idr] Shepherd Review for draft-chen-idr-bgp-sr-policy-cp-validity-03
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Shepherd review for draft-chen-idr-bgp-sr-policy-cp-validity-03
Reviewer: Susan Hares
Status: Authors call for adoption, but needs -04 + Spring Wg Ok
Spring document: draft-chen-spring-sr-policy-cp-validity
Authors: 5
Implementations: Unknown
Status of -02: All issues in Shepherd review -02 were resolved.
Status of -03: Shepherd review evaluated based on Tunnel-Encapsulation template
Technical Issues in -03
=========
Issue-1: Better form for IANA type
Section 3:
old text:/
/Type: to be assigned by IANA./
New text:/
/Type: TBD1 (to be assigned by IANA)./
Section 5:
Old text:/
TBD CP Validity Sub-TLV This document/
New text:/
TBD1 CP Validity Sub-TLV This document/
Issue-2: TEA template checks.
1. Can this Sub-TLV go in any other Tunnel-Encaps Attribute TLV than SR Policy?
I suspect the answer to this question is "no". You simply need to specify this in section 2 or 3.
2. This sub-TLV provides a role in validating and choosing Active SR Policy paths from candidate paths
This validation is not at the BGP peer, but in the SRPM. Your text needs to indicate this point.
Section 4 should indicate that it is the SRPM in the headend that is making use of this Sub-TLV.
3. You need to create a manageability section
Consider two questions:
- 3-a) Would setting configuration by Yang module
If the headend uses configuration to set these values, should a Yang module be created that
augments BGP SR implementations? You do not have to create the module, merely indicate that it is useful.
- 3-b) Monitoring of the information by BGP-LS
If bgp-ls would be helpful in monitoring the the headend setting of this value, please indicate how it would be useful.